426 research outputs found
Corrole basicity in the excited states: Insights on structure-property relationships
No full textSteady-state fluorescence measurements and quantum-chemical DFT geometry optimizations are applied to extend the structure-property relationships between the free-base corrole macrocycle conformation and its basicity to the lowest excited S-1 and T-1 states. Direct basicity estimation in the lowest excited S-1 state is demonstrated by means of fluorescence quantum yield measurements. The long wavelength T1 tautomer is found to retain its basicity in the S(1 )state, whereas the short wavelength T2 tautomer shows a noticeable decrease in basicity in the S-1 state, which is related to the in-plane tilting of the pyrrole ring to be protonated. The conformational changes upon going from the ground to the lowest excited T-1 state and the influence of the meso-aryl substitution pattern on the overall degree of distortions and tilting of the pyrrole ring to be protonated are also discussed from the point of view of macrocycle basicity.Prof. W. Maes acknowledges the Research Foundation-Flanders (FWO) and Hasselt University for financial support. Prof. M. Kruk, Prof. L. Gladkov and Ass. Prof. D. Klenitsky acknowledge the State Program of Scientific Researches of the Republic of Belarus "Photonics, opto-and microelectronics", grant no.1.3.01, for financial support.Maes, W (corresponding author), Hasselt Univ, Inst Mat Res IMO IMOMEC, Agoralaan 1, B-3590 Diepenbeek, Belgium.
Kruk, MM (corresponding author), Belarusian State Technol Univ, Phys Dept, Sverdlov Str 13a, Minsk 220006, BELARUS.
[email protected]; [email protected]
F. Gladkovo pozicijos šio amžiaus trečiojo dešimtmečio literatūrinėje kovoje klausimu
No full textThe essay „Concerning F. Gladkov\u27s stand in the literary struggle of the twenties" deals with F. Gladkov\u27s bonds with „Kuznitsa" (the oldest circle of proletarian writers) and with his arguments with RAPP on important literary questions. The author proves that F. Gladkov saw eye to eye with „Kuznitsa" and that\u27s why it is wrong to contrast them.Straipsnyje „F. Gladkovo pozicijos šio amžiaus trečiojo dešimtmečio literatūrinėje kovoje klausimu" kalbama apie vieno iš tarybinės literatūros pradininkų ryšį su seniausia proletarinių rašytojų grupe „Kuznica", apie jo polemiką su RAPP įvairiais literatūrinio gyvenimo klausimais. Straipsnyje parodoma, kad Gladkovo pozicija dažniausiai sutapo su „Kuznicos" pozicija, ir todėl neteisinga vieną priešpastatyti kitai
Quels textes lisons-nous ? Les classiques soviétiques au fil des révisions
No full textWhat texts do we read? Soviet classics revision after revision
'Soviet classics' (of Socialist Realism) became classics at the price of successive rewritings, including stylistic and ideological corrections made by the author or the editors. The examination of the various editions of Čapaev (D. Furmanov), Cement (F. Gladkov), Razgrom (A. Fadeev), Как zakaljalas' stal' (N. Ostrovskij) shows the need to put together critical editions of Soviet classics.
'Soviet classics' (of Socialist Realism) became classics at the price of successive rewritings, including stylistic and ideological corrections made by the author or the editors. The examination of the various editions of Čapaev (D. Furmanov), Cernent (F. Gladkov), Razgrom (A. Fadeev), Как zakaljalas' stal' (N. Ostrovskij) shows the need to put together critical editions of Soviet classics.</jats:p
Quels textes lisons-nous ? Les classiques soviétiques au fil des révisions
No full textWhat texts do we read? Soviet classics revision after revision
'Soviet classics' (of Socialist Realism) became classics at the price of successive rewritings, including stylistic and ideological corrections made by the author or the editors. The examination of the various editions of Čapaev (D. Furmanov), Cement (F. Gladkov), Razgrom (A. Fadeev), Как zakaljalas' stal' (N. Ostrovskij) shows the need to put together critical editions of Soviet classics.
'Soviet classics' (of Socialist Realism) became classics at the price of successive rewritings, including stylistic and ideological corrections made by the author or the editors. The examination of the various editions of Čapaev (D. Furmanov), Cernent (F. Gladkov), Razgrom (A. Fadeev), Как zakaljalas' stal' (N. Ostrovskij) shows the need to put together critical editions of Soviet classics.Niqueux Michel. Quels textes lisons-nous ? Les classiques soviétiques au fil des révisions. In: Revue des études slaves, tome 73, fascicule 4, 2001. La littérature soviétique aujourd'hui, sous la direction de Catherine Depretto. pp. 739-746
Spectral and Luminescent Properties and NH-Tautomerism of Alkylated Corrole Free Bases
No full textThe molecular structures and spectral and luminescent properties of 2,3,7,13,17,18-hexamethyl-8,12-di-nbutylcorrole and 7,13-dimethyl-8,12-di-n-butylcorrole free bases in solutions at 288-328 K were studied using luminescence and absorption spectroscopy and quantum chemistry. Absorption and fluorescence spectra of the compounds were shown to be superimposed spectra of two NH-tautomers. Individual tautomer spectra were identified. Bands were assigned to specific transitions. NH-tautomer equilibria in the ground S(0)and lower excited S(1)singlet states were characterized.The work was financially supported by the State Basic Research Program of the Republic of Belarus Photonics, Opto-and Microelectronics (Photonics Subprogram, Task 1.3.01).Kruk, MM (corresponding author), Belarusian State Technol Univ, Minsk 220006, BELARUS.
[email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
Voce autori D. Furmanov, V. Grossman, A. Grin, F. Gladkov
No full textSi tratta delle schede riguardanti gli autori sovietici sopraelencati che entreranno nella nuova versione del Dizionario Bompiani degli autori di tutte le letterature del mondo. Dizionario Bompiani degli autor
Influence of conditions of melt cooling upon structure formation and phase composition in ingots of Al203-Zr02 alloys
No full textGladkov Vladimir Evgenievich - Candidate of Science (Chemistry), associate professor, Instrument Production Technique department, South Ural State University.
Гладков Владимир Евгеньевич - доцент, кандидат химических наук, кафедра технологии приборостроения, Южно-Уральский государственный университет.
Berezin Vladimir Mikhailovich - Doctor of Physics and Mathematics, Professor, Instrument Production Technique department, South Ural State University.
Березин Владимир Михайлович - доктор физико-математических наук, профессор, кафедра технологии приборостроения, Южно-Уральский государственный университет. e-mail: [email protected]
Zhckhanova Natalia Borisovna - pensioner.
Жеханова Наталья Борисовна - в настоящее время на пенсии.Представлены результаты по исследованию закономерностей в формировании
макро- и микроструктуры слитков сплавов (75 мас. % А12О3 -25 мас. % ZrО2), их фазового состава в зависимости от условий отвода тепла от различных объёмов кристаллизующегося расплава. Установлена зависимость структуры, фазового состава и прочности частиц (в составе узкой фракции (1250 d 1600) мкм), получаемых при дроблении слитков, от условий отвода тепла при кристаллизации расплава в различных объёмах и условиях охлаждения. The article presents the results of research of regularities in macro- and microstructure formation of ingots of alloys (75 mass % Al203-25 mass % Zr02) and their phase composition depending on the conditions of heat removal from different volumes of crystallizing melts. The dependence of structure, phase composition and strength of particles (as part of close-cut fraction (1250 d 1600) micrometer) obtained while grinding the ingots upon the conditions of heat removal while crystallizing the melt in different volumes and conditions of cooling
JOHN OF SALISBURY’S “SUMMA SCIENTIAE”: AUTHOR AND THE TEXTS IN CULTURE OF THE “RENAISSANCE OF THE TWELFTH CENTURY”
No full textThe paper is dedicated on detail consideration of two types of John of Salisbury’s works (1115/1120-1180) - the big one including treatises “Entheticus de dogmate philosophorum”, “Policraticus”, “Metalogicon” and the small one, which involves two "Lifes" - st.Anselm the Cantuarian and Thomas Backet and also papers, which might not be written by John of Salisbury.The purpose of this work is to show the same conception of these various in style and range of problems works reflecting profound worldview principles of an outstanding intellectual and writer of the twelfth century
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